Lath.



G. W. SWISHER.

LATH.

APPLICATION FILED AUG. 1s, 1910.

1,020,329. Patented Mar. 12,1912.

J Geo? 'ye WJWI/lfel @gw Wm' Wim@ f 4 amm,

GEORGE W. SWISHER, OF CLIFTON FORGE, VIRGINIA.

Specification of Letters Patent.

Patented Mar. 12, 1912.

Application filed August 16, 1910. Serial No. 577,473.

To all whom it may conca/m.'

Be it known that I, Gnoaon IV. Swrsnnn, a citizen of the United States,residing at Clifton Forge, in the county of Alleghany and State ofVirginia, have invented new and useful Improvements in Laths, of whichthe following is a specification.

The invention relates to an improved lathing for use in building, uponwalls, ceilings and the like, and is particularly directed to a lathingsheet formed to be secured to the studding throughout the edges of thesheet and formed intermediate the studding for the passage of theplaster wholly through the lathing sheet, whereby to secure the plasterto the lathing in a substantial manner.

The main object of the present invention is the provision of a lathingsheet formed atregular intervals and throughout its full width betweenthe studding with division lines so formed as to permit the passage ofthe plaster beyond that surface of the lathing to which it is applied,each lathing strip intermediate its division lines being formed with keyopenings to permit the passage of the plaster through and beyond thesame as an aid for securing the plaster in place.

The invention in its preferred details of construction will be describedin the following specification, reference being had particularly to theaccompanying drawings, in which:-

Figure 1 is a view in elevation of a lathing sheet, seen from the sideopposite that to which the plaster is applied. Fig. 2 is a verticalcentral section of the same with the plaster in place, the section beingtaken on the line 2--2 of Fig. l. Fig. 3 is a vertical section showing aslightly modified form of lathing sheet. Fig. 4 is an elevation of saidmodified form of lathing sheet with the plaster applied.

Referring particularly to the accompanying drawings, my improved lathingsheet comprises a strip of sheet metal l designed to be nailed orotherwise appropriately secured to the studding 2. The longitudinal sideedges of the strip are bent laterally to provide reinforcing sideflanges 3 extending outwardly from and approximately at right angles tothe plane of the studding.

In the preferred form, the lathing sheet is divided on spaced parallellines extending horizontally of said sheet to form what may be termedslots 4, these slots extending throughout that length of the sheetincluded between the proximate faces of the adjacent studding and beingpreferably spaced a distance apart corresponding to the ordinary lathingwidths. The slots 4 are formed by punching through the material of thesheet, and the material thus forced beyond the normal plane of the sheetis extended beyond one side surface thereof in the form of walls 5,forming extensions beyond the sheet surface and being preferablyinclined toward each other. By this means the slot is widest adjacentthat surface of the sheet to which the plaster is applied, and narrowestat the opposite end, as will be plain from the drawings.

Intermediate the slots 4 each lathing strip G is formed with a series ofopenings 7 preferably provided by cutting through the material of thestrip on approximately a semi-cylindrical line and being the tongue 8thus provided at an angle to the surface of the strip, so that thetongues and walls of the slot project in the same direction.

IV ith reference particularly to Figs. 3 and 4, wherein I have shown aslightly modified form, the lathing sheet 9 is divided to provide thelathing strips l0 by forming otl'set channels 1l in place of the slots4, said channels having bottom and side walls, as shown, and providingreceiving grooves for the plaster. The side walls of the channels arepreferably formed with openings l2 to permit the passage of the plastertherethrough, whereby said plaster is keyed in place during itsapplication. The lathing sheet of the modified form is also providedwith edge flanges 13 having tongues l5 forming key openings 14 in eachstrip l0.

In the use of the sheetI itI is applied to the studding and secured inplace and the plaster applied to what may be termed the smooth side ofthe sheet. The plaster material will, in its application, be forcedthrough slots 4 and openings 7, and is keyed in place by projectinginwardly beyond the edges of the slotl walls 5 and also by the inclinedarrangement of the walls, and in the matter of the openings being' keyedin place by being forced through said openings against the tongues 8. Itwill be noted that the tongues 8 project from the surface of the sheetat an angle less than a right angle, whereby they direct the plasterforced through the opening laterally to a slight extent to cause thesame to override the opposite edge of the opening and thereby key orfirmly secure the plaster in place.

rEhe use of the modified form provides also a substantial holding Jforthe plaster, as said plaster in its aplication will ill the channels 1land he forced laterally through the openings 12, which in conjunctionwith the holding through the openings 14, as in the preferred form,serves to fixedly secure the plaster to the lathing.

I contemplate the formation of the lathing sheet in any desired size,and any appropriate material, and do not contemplate any restriction asto the size of the slots, openings or channels, as under varyingconditions and the use of diiii'erent materia-ls, variation in thesedetails may be desirable.

Having thus described the invention, what I claim as new is A sheetmetal lath having fiat side edge portions having right-angularreinforcing` flanges and adapted to be connected to wall supports andformed with a plurality of transversely extending offset portionssuhstantially rectangular in cross section and arranged in verticalspaced relation and -having their upper and lower walls formed withoutwardly extending conical projections and Jfurther formed with aseries of semi-circular angularly disposed projections arranged inhorizontal rows between the offset portions of the lath, the projectionsof each row extending in a direction opposite to the projections of theadj aoent rows, the conical projections of the offset portions beingformed with openings to permit the passage of plaster materialtherethrough, said oiipset portions and said semi-circular projectionsextending from the inner ace of the lath and the outer face of the lathbeing uniform throughout.

In testimony whereof I affix my signature in presence of two witnesses.

GEORGE lV. SVVISHER.

Witnesses J. Gr. FRY, J. C. CARPENTER, Jr.

Copies of this patent may be obtained for five cents ea'ch, byaddressing the Commissioner of Patents,

Washington, D. C.

